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【求助】Does anybody use microwave oven for Vitamin assay

  • martinmeng
    2011/04/23
  • 私聊

微波消解

  • Hi guys,
    Sorry to type English here, but my computer is not set up for Chinese character yet.
    My lab extracts oil soluble vitamins (A, D, E betacarotene, K etc) from various multivitamin-mineral sample matrix (tablets, capsules etc) and then run HPLC for assay. The sample preparation is very lengthy and I am thinking maybe microwave oven may help shorten the process. Has anybody here tried to use microwave oven to extract oil soluble vitamins?
    Thanks for your help.
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  • 星星

    第1楼2011/04/23

    i think it's ok
    用适当溶剂萃取可以有效解决这个问题...

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  • 星星

    第2楼2011/04/23

    PS:your english is very good.羡慕and前进中...

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  • martinmeng

    第3楼2011/04/23

    星星(dadakgkg)

    Thank you for your reply. I work in an English environment.

    One of my co-workers tried when working in another lab, but she had trouble with Vitamin A acetate bejing unstable under high temperature. I don't have a microwave oven right now, but want to know if somebody have any success in using microwave oven in vitamin assay. If not, I would be more hesitant
    to spend too much time on it.

    Thanks again

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  • 它山之石

    第4楼2011/05/02

    Maybe you can try it with ultrasonic extraction method.

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  • monkey5

    第5楼2011/05/05

    我想 你把这个翻译成中文 会有更多的人回答你的 我头晕

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  • 千里一盏灯

    第6楼2011/05/27

    我所知道的萃取方式一般是索式萃取、超声波萃取、微波萃取
    前一种比较费时,一般要8到16小时
    后2种都比较快,半个小时吧

    微波萃取维生素,应该很早就有这方面的文献资料了
    你可以去找找

    你需要注意的就是,微波不能对非极性物质加热,
    我不太清楚维生素极性
    如果维生素是非极性的,萃取的溶剂肯定也是非极性的
    但是非极性的放在微波里升温很困难,容易将仪器弄坏

    所以你的溶剂最好是非极性和极性混加的
    例如正己烷加丙酮

    希望对你有帮助

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  • 千里一盏灯

    第7楼2011/05/27

    维生素提取,传统的是皂化法?
    你给大家介绍介绍?

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